Do only one of the following.
(2a) Use the estimator at www.irs.gov/W4App for most accurate withholding for this step (and Steps 3 - 4); or
(2b) Use the Multiple Jobs Worksheet and enter the result in Step 4(c) below for roughly accurate withholding; or
(2c) If there are only two jobs total, you may check this box. Do the same on Form W-4 of the other job. This option is accurate for jobs with similar pay; otherwise, more tax than necessary may be withheld
TIP: To be accurate, submit a 2021 Form W-4 for all other jobs. If you (or your spouse) have self-employment income, including as an independent contractor, use the estimator.
Complete Steps 3–4(b) on Form W-4 for only ONE of these jobs. Leave those steps blank for the other jobs. (Your withholding will be most accurate if you complete Steps 3–4(b) on the Form W-4 for the highest paying job.)